Communication apparatus, imaging apparatus, control method of the same, and storage medium

An imaging apparatus, comprising:

• an imaging mode control unit configured to control a change of an imaging mode and setting based on an instruction;
• a communication unit, having operation modes including a first operation mode in which data communication is performed and a second operation mode in which power consumption is lower than that in the first operation mode, configured to perform data communication with an opposed device;
• and
• a control unit configured to control switching between the operation modes of the communication unit,
• wherein the control unit controls a speed of communication between the communication unit and the opposed device, in a case where the control unit determines that the change of the imaging mode will not cause degradation of imaging performance, at a transition of the communication unit from the first operation mode to the second operation mode, to a predetermined communication speed or lower, then controls the communication unit to transition from the first operation mode to the second operation mode, and stops clock supply to the communication unit.

A control method of a communication apparatus including a communication unit, having operation modes including a first operation mode in which data communication is performed and a second operation mode in which power consumption is lower than that in the first operation mode, configured to perform data communication with an opposed device, the control method comprising:

• controlling a speed of communication between the communication unit and the opposed device, at a transition of the operation mode of the communication unit from the first operation mode to the second operation mode, to a predetermined communication speed or lower;
• causing the communication unit to transition from the first operation mode to the second operation mode;
• and
• stopping clock supply to the communication unit.

A control method of an imaging apparatus including a communication unit, having operation modes including a first operation mode in which data communication is performed and a second operation mode in which power consumption is lower than that in the first operation mode, configured to perform data communication with an opposed device, the control method comprising:

• controlling a change of an imaging mode and setting in response to an instruction;
• and
• controlling switching between the operation modes of the communication unit,
• wherein, if it is determined that the change of the imaging mode will not cause degradation of imaging performance, at a transition of the communication unit from the first operation mode to the second operation mode, a speed of communication between the communication unit and the opposed device is controlled to a predetermined communication speed or lower, then the communication unit is caused to transition from the first operation mode to the second operation mode, and then clock supply to the communication unit is stopped.

A non-transitory computer-readable storage medium storing a program for causing a computer in a communication apparatus including a communication unit, having operation modes including a first operation mode in which data communication is performed and a second operation mode in which power consumption is lower than that in the first operation mode, configured to perform data communication with an opposed device, to execute a method, the method comprising:

• controlling, at a transition of the operation mode of the communication unit from the first operation mode to the second operation mode, a speed of communication between the communication unit and the opposed device to a predetermined communication speed or lower;
• causing the communication unit, after the transition of the operation mode of the communication unit from the first operation mode to the second operation mode, to transition from the first operation mode to the second operation mode;
• and
• stopping, after the transition from the first operation mode to the second operation mode a clock supply to the communication unit.

A non-transitory computer-readable storage medium storing a program for causing a computer in an imaging apparatus including a communication unit, having operation modes including a first operation mode in which data communication is performed and a second operation mode in which power consumption is lower than that in the first operation mode, configured to perform data communication with an opposed device, to execute a method, the method comprising:

• controlling a change of an imaging mode and setting in response to an instruction;
• and
• controlling switching between the operation modes of the communication unit,
• wherein, if it is determined that the change of the imaging mode will not cause degradation of imaging performance, a speed of communication between the communication unit and the opposed device is controlled at a transition of the communication unit from the first operation mode to the second operation mode, to a predetermined communication speed or lower, then the communication unit is caused to transition from the first operation mode, to the second operation mode, and then clock supply to the communication unit is stopped.